IndyCar Series drivers Nelson Philippe and Will Power were injured today in a crash during practice for Sunday's Indy Grand Prix of Sonoma at Infineon Raceway in Sonoma, Calif. Power suffered two broken vertebra. Philippe? Merely a broken left foot.

Both drivers suffered concussions with Philippe undergoing surgery on his foot at Santa Rosa Memorial Hospital, said IndyCar spokesman John Griffin. Both drivers were expected to remain in the hospital at least overnight, he added.

The crash started just past Turn 3 on the 12-turn Infineon course when Philippe spun out and came to rest while still on the track. The turn features a slight crest and Philippe stopped just past, or below, that crest.

Another driver, E.J. Viso, then came over the crest and crashed into the front wheels of Philippe's car, and moments later Power followed and also slammed into Philippe's car, littering the track with debris. [LATimes]